Every radio installation shall be clearly marked with the（）, the ship station identity and other codes as applicable for the use of the radio installation.

A.call sign

B.port of register

C.radio name

D.signal label

处置爆炸物的原则不正确的一项是（）。

A、要慎重处理

B、最低限度地减小爆炸破坏的程度

C、严禁触动可疑爆炸装置

D、派专职排爆人员实施排爆